参数变化

For this complex 3D flow field with rotation and backflow, a numerical method was established. The computative results agree with the experimental one. By comparison it is shown that they have the similar flow field shape, and their parameters have the accordant changing trend.

最后使用商业软件Fluent模拟计算了该旋转与回流并存的三维复杂流场，计算得到的流场形态和试验结果基本相似，各参数和对应的测量值具有一致的变化趋势。

With an unsuitable wave parameter, ACRT can make the solid-liquid interface concavity increase many times.

本研究的主要结论有：①ACRT增加了固液界面的凹陷，ACRT参数的变化能够显著影响固液界面凹陷增加的幅度。

Based on the genetic algorithm and the method of conjugate gradient, a method for optimizing the model parameters is developed.

基于遗传算法和共轭梯度法确定最优化模型参数，利用该模型拟合了2种硫化胶的应力松弛系数和永久变形率随时间变化的数据。

The structure feature of the sensor was described in comparison with the classical Stewart platform-based six-component force sensor.By using the finite element method,the elastic dynamics theoretical model of the sensor was established based on the conditions of displacement consistency and force balance.According to this model,the numerical analysis was carried out,and the variety relationship curves between the natural frequencies and the structural parameters are plotted.

描述了该传感器相对于经典Stewart平台六维力传感器所具有的结构特点；利用有限元法，采用位移协调和力平衡条件建立了传感器弹性动力学理论模型，依此模型进行数值分析，绘制了固有频率与各结构参数间变化关系曲线；并利用ANSYS软件建立了传感器有限元模型，进行了振动模态分析，得到其固有频率和振型。

This paper mainly discusses a novel non probabilistic convex set method used to estimate the eigenvalue bounds of structures with uncertain parameters.

讨论了在不确定参数的影响下估算结构特征值变化界限的一种新型非概率凸集合方法。

During vertical migration , the copepod is assumed to instantaneously check the variations of the environmental parameters and can thereby make the optimal behavioral strategy to maximize the value of venturous revenue , i .

在垂直迁移的过程中，我们假设桡足类个体能够即时识别环境参数的变化从而采取最优的行为策略以获取风险收益的最大值，即以尽可能小的死亡代价获取尽可能多的食物。

To solve the problem, an adaptive adjust method for dynamic range of photon correlator was presented in this paper.

对此， 提出一种可根据被测颗粒体系的粒度分布范围变化，自适应修正测量参数进行光子相关器动态范围调整的方法。

For example, to counter the disadvantage of apprising the dynamic characteristics of valve train with the maximum negative acceleration which is not enough be observed directly and not enough correct, a method of observing directly the valve trains bounce has been also put forward in this paper.

也就是在理论研究手段基本完备的情况下，利用模型直接观察机构的飞脱现象。并且以6110柴油机配气机构为例，考察了机构中最容易反映飞脱特性的推杆力随结构参数、凸轮型线和凸轮转速的变化规律，为研究配气机构飞脱特性提供了直观有效的方法。

Aiming at the mathematic model of shafting crankle coupling vibration based on the subsection continuous mass model,the multidimensional frequeney analysis method is put forward and developed.Combining frequency change with shafting configuration parameter,it's more favorable to have direct analysis.The method...

针对基于分段连续质量模型的轴系弯扭耦合振动数学模型，进一步简化并提出多维频率分析方法，将频率变化与轴系的结构参数联系起来，有利于直观分析，同时给出分析振型、共振频率及共振模态等的方法

The primary loop system of nuclear power equipment working safely and creditably is very important for the equipment operation. So it is important to know the varied rule of every parameter in the system.

由于核动力装置一回路系统的安全可靠工作对整个核动力装置的正常运行十分重要，因此，掌握核动力装置一回路系统在受到扰动时，系统各参数的变化规律显得尤为重要。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐